S13nServiceWorker: Fix fetch_request_context handling in navigation

ResourceRequest::fetch_request_context was not set in
NavigationURLLoaderNetworkService, which resulted in failure of
wpt/fetch/api/request/destination/fetch-destination-iframe.https.html.

Bug: 778721
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_mojo
Change-Id: I595e1a877d3fc7c8dbbd720867fd344d3c88b2ac
Reviewed-on: https://chromium-review.googlesource.com/951670Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541427}

content/browser/loader/navigation_url_loader_network_service.cc

@@ -250,6 +250,8 @@ std::unique_ptr<network::ResourceRequest> CreateResourceRequest(
   new_request->fetch_credentials_mode =
       network::mojom::FetchCredentialsMode::kInclude;
   new_request->fetch_redirect_mode = network::mojom::FetchRedirectMode::kManual;
+  new_request->fetch_request_context_type =
+      request_info->begin_params->request_context_type;
   return new_request;
 }
 

third_party/WebKit/LayoutTests/FlagExpectations/enable-features=NetworkService

@@ -9,7 +9,6 @@ Bug(none) external/wpt/content-security-policy/inside-worker/dedicated-inheritan
 Bug(none) external/wpt/content-security-policy/inside-worker/dedicated-script.html [ Failure Timeout ]
 Bug(none) external/wpt/cookies/secure/set-from-wss.https.sub.html [ Failure ]
 Bug(none) external/wpt/css/css-fonts/font-display/font-display.html [ Failure Timeout ]
-Bug(none) external/wpt/fetch/api/request/destination/fetch-destination-iframe.https.html [ Failure ]
 Bug(none) external/wpt/html/browsers/offline/appcache/workers/appcache-worker.html [ Timeout ]
 Bug(none) external/wpt/service-workers/service-worker/claim-shared-worker-fetch.https.html [ Failure ]
 Bug(none) external/wpt/service-workers/service-worker/clients-get-client-types.https.html [ Failure ]